Optics

the distribution of colors produced when light is dispersed by a prism

when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

the distance from a lens to its focus

the distance from a lens to its focus

the ratio of the velocity of light in a vacuum to that in a medium

the ratio of the velocity of light in a vacuum to that in a medium

the distribution of colors produced when light is dispersed by a prism

the scattering of X rays by the atoms of a crystal; the diffraction pattern shows structure of the crystal

a transparent optical device used to converge or diverge transmitted light and to form images

a transparent optical device used to converge or diverge transmitted light and to form images

a transparent optical device used to converge or diverge transmitted light and to form images

a column of light (as from a beacon)

a column of light (as from a beacon)

cause to converge on or toward a central point; "Focus the light on this image"

a column of light (as from a beacon)

a column of light (as from a beacon)

polished surface that forms images by reflecting light

the phenomenon in which waves of light or other radiation are restricted in direction of vibration

optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image

a column of light (as from a beacon)

a column of light (as from a beacon)

the image of something as reflected by a mirror (or other reflective material); "he studied his reflection in the mirror"

the image of something as reflected by a mirror (or other reflective material); "he studied his reflection in the mirror"

the change in direction of a propagating wave (light or sound) when passing from one medium to another

a column of light (as from a beacon)

a column of light (as from a beacon)

lens used to concentrate light on an object

a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication

lens for correcting defective vision in one eye; held in place by facial muscles

combination of lenses at the viewing end of optical instruments

lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length

(optics) a lens that is concave on one side and convex on the other

lens for correcting defective vision in one eye; held in place by facial muscles

the lens or system of lenses in a telescope or microscope that is nearest the object being viewed

combination of lenses at the viewing end of optical instruments

a mirror; usually a ladies' dressing mirror

a ray of moonlight

a mirror (especially one made of polished metal) for use in an optical instrument

a ray of sunlight

a convex lens that focuses the rays of the sun; used to start a fire